甘肃农业科技
甘肅農業科技
감숙농업과기
Gansu Agricultural Science and Technology
2015年
10期
7-9
,共3页
异迟眼蕈蚊%亚致死效应%杀虫剂
異遲眼蕈蚊%亞緻死效應%殺蟲劑
이지안심문%아치사효응%살충제
Bradysia difformis Frey%Sublethal effects%Insecticides
采用浸虫法测定了10%吡虫啉可湿性粉剂、40%辛硫磷乳油及48%毒死蜱乳油对异迟眼蕈蚊3龄幼虫的毒力,并计算致死中浓度LC50、亚致死剂量LC10、LC20和LC30。结果表明,3种药剂LC10、LC20及LC30对异迟眼蕈蚊的化蛹率、羽化率和单雌平均产卵量具有显著抑制作用,且随着亚致死浓度的增大而增强。10%吡虫啉可湿性粉剂的3种亚致死剂量对异迟眼蕈蚊的抑制作用最小,48%毒死蜱乳油的3种亚致死剂量对异迟眼蕈蚊的影响最大。在3种药剂的亚致死剂量中,对单雌平均产卵量影响最大的为40%辛硫磷乳油,其次是48%毒死蜱乳油和10%吡虫啉可湿性粉剂。除蛹重与对照相比变化幅度不大,其余生物学指标均总体低于对照。
採用浸蟲法測定瞭10%吡蟲啉可濕性粉劑、40%辛硫燐乳油及48%毒死蜱乳油對異遲眼蕈蚊3齡幼蟲的毒力,併計算緻死中濃度LC50、亞緻死劑量LC10、LC20和LC30。結果錶明,3種藥劑LC10、LC20及LC30對異遲眼蕈蚊的化蛹率、羽化率和單雌平均產卵量具有顯著抑製作用,且隨著亞緻死濃度的增大而增彊。10%吡蟲啉可濕性粉劑的3種亞緻死劑量對異遲眼蕈蚊的抑製作用最小,48%毒死蜱乳油的3種亞緻死劑量對異遲眼蕈蚊的影響最大。在3種藥劑的亞緻死劑量中,對單雌平均產卵量影響最大的為40%辛硫燐乳油,其次是48%毒死蜱乳油和10%吡蟲啉可濕性粉劑。除蛹重與對照相比變化幅度不大,其餘生物學指標均總體低于對照。
채용침충법측정료10%필충람가습성분제、40%신류린유유급48%독사비유유대이지안심문3령유충적독력,병계산치사중농도LC50、아치사제량LC10、LC20화LC30。결과표명,3충약제LC10、LC20급LC30대이지안심문적화용솔、우화솔화단자평균산란량구유현저억제작용,차수착아치사농도적증대이증강。10%필충람가습성분제적3충아치사제량대이지안심문적억제작용최소,48%독사비유유적3충아치사제량대이지안심문적영향최대。재3충약제적아치사제량중,대단자평균산란량영향최대적위40%신류린유유,기차시48%독사비유유화10%필충람가습성분제。제용중여대조상비변화폭도불대,기여생물학지표균총체저우대조。
The method of immersing the insects in insecticides used to do the toxicity determination and sublethal testing of 3rd instar larvae of Bradysia difformis. Sublethal dose LC10、LC20、LC30 had been treated the insects,and then after 24 h survival larvae would breeded in regulated heating block (temperature 25 ℃,humidity 70%~80%). Biological parameters are recorded,such as pupation rate,pupa weight,emergence rate and eggs laid per female. The result indicates that three kinds of insecticides all had inhibiting effect,for 48%Chlorpyrifos EC the sublethal effects is the best,and 10%Imidacloprid wettable powder is the worst one. In the sub lethal dose of three kinds of insecticides,40% Phoxim EC the average single female eggs effect is the best,followed by 48%Chlorpyrifos EC and 10% Imidacloprid wettable powder,Compared with control,the pupa weight didn't change obviously,but other biological parameters declined especially the eggs laid per female.